Struct RowNumberFunction

Source

pub struct RowNumberFunction;

Expand description

ROW_NUMBER window function

Returns the sequential row number within the current partition, starting at 1. Unlike RANK(), ROW_NUMBER() assigns consecutive numbers even for equal values.

Trait Implementations§

Source §

impl Default for RowNumberFunction

Source §

fn default() -> RowNumberFunction

Returns the “default value” for a type. Read more

Source §

impl WindowFunction for RowNumberFunction

Source §

fn name(&self) -> &str

Get the function name

Source §

fn info(&self) -> FunctionInfo

Get function information

Source §

fn process( &self, _partition: &[Value], _order_by: &[Value], current_row: usize, ) -> Result<Value>

Process the window function Read more

Source §

fn clone_box(&self) -> Box<dyn WindowFunction>

Clone the function into a new instance

Auto Trait Implementations§

§

impl UnwindSafe for RowNumberFunction

Blanket Implementations§

Source §

impl<T> Any for T
where T: 'static + ?Sized,

Source §

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

Source §

impl<T> Borrow<T> for T
where T: ?Sized,

Source §

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

Source §

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source §

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

Source §

impl<T> CompactArcDrop for T

Source §

unsafe fn drop_and_dealloc(ptr: *mut u8)

Drop the contained data and deallocate the header+data allocation. Read more

Source §

impl<T> From<T> for T

Source §

fn from(t: T) -> T

Returns the argument unchanged.

Source §

impl<T, U> Into for T
where U: From<T>,

Source §

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source §

impl<T> IntoEither for T

Source §

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

Source §

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

Source §